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an electron is trapped somewhere in a molecule which is 58nmlong calculate the minimum kinetic energy of the
a small mirror is attached to a vertical wall and it hangs adistance of 159 m above the floor the mirror is facing
a calorimeter contains 220ml of water at 120 celcius when 230g of a substance with a molar mass of 560 gmol is added
a 500-omega resistor is connected to a 300-mufcapacitor and to a 600-hz 100-v rms sourcea find the power factor and the
how many moles of hydrogen gas occupy a volume of 559ml at standard temperature and
one object is at rest and another is moving the two collide ina one-dimensional completely inelastic collision in other
tungsten has a boy-centered cubic unit cell and an atomic radius of 141 pm what is the density of solid
a torque of 500nm is applied to a turbine rotating at 200rads after 40 sec its speed has doubled what is the
two hydrogen atoms both initially in the ground state undergo ahead-on collision if both atoms are to be excited to the
air entering the lungs ends up in tiny sacs called alveoli it is from the alveoli that oxygen diffuses into the blood
a planet in another solar system orbits a star with a mass of 40times1030 kg at one point in its orbit it is
a two-stage rocket moves in space at a constant velocity of4640 ms the two stages are then separated by a small
you want to heat the air in your house with natural gas ch4assume your house has 275 m2 of floor area and that the
a tall tree is growing across a river from you you wouldlike to know the distance between yourself and the tree as well
an emf of 230 mv is induced in a505 turn coil when the current ischanging at a rate of 70 as what is the magnetic flux
determine the molar mass of a gas with a density of 22108 gl at 8000 degrees c and exactly 1
if 500ml of ethanoldensity789gml initially at 70 celcius is mixed with 500ml of waterdensity10gml initially at 285
a metal ball of mass 066 kg with initial temperature of 30oc is dropped in to a container of 108 kg of water at 20oc if
the elements of which groups in the periodic table release the most energy by gaining an electron the elements of which
calculate the density of helium in a helium balloon at 347 degrees c assume that the pressure inside the balloon is 119
a model rocket is constructed with a motor that can provide atotal impulse of 210 nmiddots the mass of the rocket is
a wall is composed of two materials material 1 has a thickness of322 cm and a thermal conductivity of 01 while material
calculate the mass in grams of hydrogen chloride produced when 505l of molecular hydrogen measured at stp reacts with
a light bulb emits light uniformly in all directions the averageemitted power is 1500 w at a distance of 7 m from the
a player uses a hockey stick to increase the speed of a0200kg hockey puck by 6 ms in 2 secondsa how much did the hockey